The proximity of the seat of power to the warehouse may have ensured that the ruler and his entourage could inspect stocks easily. An ivory workshop in the acropolis suggests that elephants may have been domesticated to produce the raw material.
The "great bath" is without doubt the earliest public water tank in the ancient world. The tank itself measures approximately 12 meters north-south and 7 meters wide, with a maximum depth of 2.4 meters.
Private wells were rebuilt over many generations to serve the needs of a large household or neighborhood. This well in DK G area at Mohenjo-daro stands like a chimney because all of the surrounding earth has been removed by excavation.
The most unique aspect of planning during the Indus Valley civilization was the system of underground drainage. The main sewer, 1.5 meters deep and 91 cm across, connected to many north-south and east-west sewers.
A large public well and public bathing platforms were found in the southern part of Mound AB at Harappa. These public bathing areas may also have been used for washing clothes as is common in many traditional cities in Pakistan and India today.
This drain cuts through the edge of the so-called granary. If the entire drain were constructed along with the Great Bath, this feature would indicate that the original "granary" was built before the great bath.